Find anything that can be improved? Suggest corrections and new documentation via GitHub.

Doubts on how to use Github? Learn everything you need to know in this tutorial.

Reference > Libraries > Pca9557 arduino

PCA9557-arduino

Communication

Write & Read PCA9557 8-bit I/O expander
Allows you write and read digital logic via PCA9557 8-bit I/O expander

Author: Sonthaya Nongnuch

Maintainer: Sonthaya Nongnuch

Read the documentation

Go to repository

Compatibility

This library is compatible with all architectures so you should be able to use it on all the Arduino boards.

Releases

To use this library, open the Library Manager in the Arduino IDE and install it from there.